Chemistry

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ConTeXt comes with the extensive chemistry module PPCHTeX which allows the drawing of chemical structures and the typesetting of reactions.

PPCHTeX works with plain TeX, LaTeX and - of course - with ConTeXt.

• PPCHTeX (general) by Pragma
• PPCHTeX documentation by Pragma
• PPCHTeX mailing list
• PPCHTeX mailing list archive

Some other PPCHTeX links:

• PPCHTeX structure database
• PPCHTeX FAQ and PPCHTeX FAQ in PDF(rather old)
• TUG Boat article on PPCHTeX by Hans Hagen and A.F Otten

Some other links about chemistry in ConTeXt:

• Chromatograms macro
• ChemML (screen), MathML extension for chemistry

Simple Formulae in Text Mode

An alternative to using the chemistry module or mathmode for typesetting simple formulae are the three ConTeXt commands \high, \low and \lohi. This might be useful if you want to typset the formula with the same font as the surrounding text (in titles or slanted fonts, although that might not be desired in all situations).

\ss H\low{2}O also consists of H\high{+} and OH\high{$-$}.
There are two main carbon isotopes: \lohi{6}{12}C and \lohi[left]{6}{13}C.